Definition: a deception for profit to yourself
Main entry: unsporting, unsportsmanlike, dirty, foul, cheating
Definition: violating accepted standards or rules
Usage: a dirty fighter; used foul means to gain power; a nasty unsporting serve; fined for unsportsmanlike behavior
Main entry: two-timing, adulterous, cheating
Definition: not faithful to a spouse or lover
Usage: adulterous husbands and wives; a two-timing boyfriend